Introduction

Requirements

For evaluation of the software following items are required:

a NUCLEO board
optional an adapter board with an Ethernet Switch
PC with Linux, Windows or MacOS
Micro USB cable
Ethernet cable

Software delivery

Installation

The software comes in different versions, e.g.

0210_119_PROFINET_2.23.0_STM32_CUBE.zip

It contains all relevant sources and projects for evaluation on the supported hardware. This software delivery should be unpacked to a folder.

Importing of example projects

Initial view of STM32CubeIDE

Dialog for importing projects into workspace

Following table shows the various project types that are part of the software package.

project suffix	target board	remarks

project suffix	target board	remarks
stm32_cube_f429_eth_2port	NUCLEO-F429ZI with switch adapter board
stm32_cube_f429_eth_standalone_rtos	NUCLEO-F429ZI board with EEPROM board X-NUCLEO-EEPRMA2	FreeRTOS version Because of limited resources on the NUCLEO-F429ZI board with this configuration only small examples are provided. Examples with communication stacks (PROFINET, EtherNet/IP, EtherCAT) require more RAM in combination with FreeRTOS.
stm32_cube_f429_eth_standalone	NUCLEO-F429ZI board with EEPROM board X-NUCLEO-EEPRMA2
stm32_cube_h723_eth_2port	NUCLEO-H723ZG with switch adapter board
stm32_cube_h723_eth_2port_rtos	NUCLEO-H723ZG with switch adapter board	FreeRTOS version
stm32_cube_h723_eth_standalone_rtos	NUCLEO-H723ZG with EEPROM board X-NUCLEO-EEPRMA2	FreeRTOS version
stm32_cube_h723_eth_standalone	NUCLEO-H723ZG with EEPROM board X-NUCLEO-EEPRMA2
stm32_cube_h743_eth_2port	NUCLEO-H743ZI/NUCLEO-H753ZI with switch adapter board
stm32_cube_h743_eth_2port_rtos	NUCLEO-H743ZI/NUCLEO-H753ZI with switch adapter board	FreeRTOS version
stm32_cube_h743_eth_standalone_rtos	NUCLEO-H743ZI/NUCLEO-H753ZI with EEPROM board X-NUCLEO-EEPRMA2	FreeRTOS version The EEPROM board is optional, the software can also use the internal secondary flash bank for storage of parameters. However, this is only allowed to be used for evaluation. Productive code needs to have an extern EEPROM for storage of parameters.
stm32_cube_h743_eth_standalone	NUCLEO-H743ZI/NUCLEO-H753ZI with EEPROM board X-NUCLEO-EEPRMA2	The EEPROM board is optional, the software can also use the internal secondary flash bank for storage of parameters. However, this is only allowed to be used for evaluation. Productive code needs to have an extern EEPROM for storage of parameters.

Evaluation

Evaluation on NUCLEO boards

Depending on the Nucleo board an external EEPROM board is required for proper operation. The following NUCLEO boards require this extension:

Development board	Required

Development board	Required
NUCLEO-H753ZI	-
NUCLEO-H743ZI	-
NUCLEO-H723ZG	X-NUCLEO-EEPRMA2
NUCELO-F429ZI	X-NUCLEO-EEPRMA2

The software always requires an external EEPROM for storage of non volatile parameters. For some STM32 controllers storage in internal flash is implemented, however this must no be used in productive usage.

The extension board X-NUCLEO-EEPRMA2 (https://www.st.com/en/evaluation-tools/x-nucleo-eeprma2.html ) is an extension board for the Nucleo boards Arduino header containing some I2C and SPI eeproms. In order to be abple for the software to write to the EEPROM, the jumper J11 needs to be set to Wpn pin to VCC.

Disable the write protection on the X-NUCLEO-EEPRMA2 board using J11.

Evaluation with Switch controller

Using an external switch requires a modified custom hardware from port. There a preconfigured switch (KSZ8863) is available. The management of the switch is done through SPI channel 4. Data is transferred using RMII between STM32 and the switch.

The hardware connections between STM32 and peripherals are listed here:

I2C EEPROM
- I2C data interface
  - I2C channel 2
    - SCL: PF1
    - SDA: PF0
Switch KSZ8863
- SPI management interface
  - SPI channel 4
    - MISO: PE5
    - MOSI: PE6
    - SCLK: PE2
    - NSS: PE4
  - RST: PC0
  - ITR: -
- DATA interface RMII
  - TXD0: PG13
  - TXD1: PG12
  - TX_EN: PG11
  - RXD0: PC4
  - RXD1: PC5
  - CRS_DV: PA7
  - RMII_CLOCK: PA1
  - MDC: -
  - MDIO: -

It is not recommended to connect a RMII switch to the STM32 using wires. RMII requires short signal paths and specific routing and layout requirements apply. Else communication might not work.

Evaluation with EtherCAT

Using EtherCAT requires a modified custom hardware from port. There, the possibility to connect a modified LAN9253 EtherCAT controller is provided. The access to the ESC done through SPI channel 3.

It is possible to use a stand alone NUCLEO board for evaluation of EtherCAT. Then the EtherCAT stamp needs to be connected by hand to the NUCLEO board according to the connection requirements listed below.

LAN9253 EtherCAT controller:
- SPI channel 3
  - MISO: PC11
  - MOSI: PB2
  - SCLK: PC110
  - NSS: PA4
- RST: PG1
- INT: PC6
- SYNC0: PB8
- SYNC1: PB9

Customer Hardware porting

Based on the example projects and the provided CubeMX configuration files (ioc) the software can easily be adapted to any custom hardware.

Evaluation of examples

Please check the following chapter on how to test a PROFINET application with ports Industrial Communication Explorer: Quick Start Guide for GOAL on Raspberry Pi | Profinet Binary .